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प्रश्न
Which part of the brain maintains posture and equilibrium of the body?
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उत्तर
Cerebellum, a part of hindbrain is responsible for maintaining posture and equilibrium of the body.
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संबंधित प्रश्न
Briefly explain the following terms : Reflex action
Name two parts of the body which contain receptors of chemical stimuli.
What are the various sense organs in our body?
What is spinal cord? What is its main function?
A person walks across a room in barefeet and puts his foot on a drawing pin lying on the floor. He lets out a cry. Explain what happens in his nervous system in bringing about this response.
One of the following gives the correct sequence of the components in a reflex arc. This is:
A cylindrical structure P in our body begins in continuation with medulla and extends downwards. It is enclosed in a bony cage Q and surrounded by membranes R. As many as x pairs of nerves arise from the structure P. The structure P is involved in the reflex actions of our body and conduction of nerve impulses to and from another organ S of our body with which it forms CNS.
(a) Name the structure P.
(b) Name (i) bony cage Q, and (ii) membranes R.
(c) How much is x?
(d) Name the organs S.
(e) What are the reflexes involving structure P only known as?
Write down the following activities in the correct order for a simple reflex arc:
(a) impulse travels in the motor fibre
(b) impulse travels in the sensory fibre
(c) effector organ stimulated
(d) impulse crosses the synapse
Differentiate between the following pair of terms:
Stimulus and impulse
Define voluntary and reflex actions. Give examples of each.
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Stimulus : Receptor :: Impulse : ______.
Complete the following statement by choosing the correct alternative from the choice given in bracker:
Reflex action is controlled by
(i) brain (ii) spinal cord
(iii) autonomic (iii) peripheral nervous system
List in tabular form two differences between reflex action and walking.
Define the following:
Reflex action
Reflex action is controlled by the
State whether the following is simple reflex, conditioned reflex or neither of the two.
Blushing
In reflex action, the reflex arc is formed by ______
